61263412545 has 16 divisors (see below), whose sum is σ = 98030332800. Its totient is φ = 32670862464.

The previous prime is 61263412537. The next prime is 61263412547. The reversal of 61263412545 is 54521436216.

61263412545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61263412545 - 2³ = 61263412537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61263412547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8164 + ... + 350133.

It is an arithmetic number, because the mean of its divisors is an integer number (6126895800).

Almost surely, 2^61263412545 is an apocalyptic number.

It is an amenable number.

61263412545 is a deficient number, since it is larger than the sum of its proper divisors (36766920255).

61263412545 is a wasteful number, since it uses less digits than its factorization.

61263412545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369704.

The product of its digits is 172800, while the sum is 39.

The spelling of 61263412545 in words is "sixty-one billion, two hundred sixty-three million, four hundred twelve thousand, five hundred forty-five".